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DEBT - Narrative (Details) - USD ($) |  |  |  | 1 Months Ended | 9 Months Ended |  |  |  |  |  |  |  |  |  |
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Jan. 10, 2025 | Jul. 26, 2024 | Jul. 17, 2024 | Feb. 28, 2017 | Sep. 30, 2025 | Dec. 31, 2024 | Jun. 07, 2024 | Jun. 05, 2024 | May 07, 2024 | Apr. 24, 2024 | Mar. 27, 2024 | Nov. 30, 2023 | Nov. 30, 2022 | Dec. 31, 2021 | Mar. 08, 2021
ABL Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  | $ 500,000,000 |  |  | $ 500,000,000.0 |  |  |  |  |  |  |  |  |  |
Borrowing base capacity |  |  |  |  | $ 519,000,000 |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  |
Interest rate during period (as a percent) |  |  |  |  | 7.01% |  |  |  |  |  |  |  |  |  |
Unused portion under the facility |  |  |  |  | $ 349,200,000 |  |  |  |  |  |  |  |  |  |
ABL Facility | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured notes |  |  |  |  | $ 800,000 |  |  |  |  |  |  |  |  |  |
ABL Facility | Maximum | Summit Permian Transmission, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First lien net leverage ratio |  | 2.50 |  |  | 0.57 |  |  |  |  |  |  |  |  |  |
Interest coverage ratio |  | 2.00 |  |  | 2.73 |  |  |  |  |  |  |  |  |  |
ABL Facility | Summit Holdings And Finance Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of other assets |  | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate commitments (as a percent) |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |
ABL Facility | Summit Holdings And Finance Corporation | Minimum | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  | 1.50% |  |  |  |  |  |  |  |  |  |  |  |  |
ABL Facility | Summit Holdings And Finance Corporation | Minimum | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |
ABL Facility | Summit Holdings And Finance Corporation | Maximum | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  | 2.25% |  |  |  |  |  |  |  |  |  |  |  |  |
ABL Facility | Summit Holdings And Finance Corporation | Maximum | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 175,000,000
Basis spread on variable rate (as a percent) |  |  |  |  | 2.475% |  |  |  |  |  |  |  |  |  |
Interest rate during period (as a percent) |  |  |  |  | 6.82% |  |  |  |  |  |  |  |  |  |
Unused portion of the Permian transmission credit facility |  |  |  |  | $ 2,000,000.0 |  |  |  |  |  |  |  |  |  |
Commitment fee (as a percent) |  |  |  |  | 0.70% |  |  |  |  |  |  |  |  |  |
Credit Agreement | Standby Letters of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unused portion of the Permian transmission credit facility |  |  |  |  | $ 13,000,000 |  |  |  |  |  |  |  |  |  |
Credit Agreement | Term Loan Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 160,000,000
Credit Agreement | Working Capital Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,000,000
Credit Agreement | Summit Permian Transmission, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt hedged by interest rate derivatives (as a percent) |  |  |  |  | 90.00% |  |  |  |  |  |  |  |  |  |
Credit Agreement | Summit Permian Transmission, LLC | Interest Rate Contract |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  | 1.23% |  |  |  |  |  |  |  |  |  |
Permian Transmission Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  | 2.475% |  |  |  |  |  |  |  |  |  |
Interest rate during period (as a percent) |  |  |  |  | 6.82% |  |  |  |  |  |  |  |  |  |
Senior Secured Second Lien Notes, 2029 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt offering | $ 250,000,000 | $ 50,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Secured Second Lien Notes, 2029 | Summit Holdings And Finance Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt offering |  | $ 575,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  | 8.625% |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price (as a percent) | 103.375% | 108.625% |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Secured Second Lien Notes, 2029 | Summit Holdings And Finance Corporation | Redemption Option One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage (as a percent) |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Secured Second Lien Notes, 2029 | Summit Holdings And Finance Corporation | Redemption Option Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage (as a percent) |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
2029 Secured Notes | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  | 8.625% |  |  |  |  |  |  |  |  |  |
Unsecured notes |  |  |  |  | $ 825,000,000 | $ 575,000,000 |  |  |  |  |  |  |  |  |
2026 Secured Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt offering |  |  |  |  |  |  |  |  |  |  |  |  | $ 85,000,000 | $ 700,000,000 |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.50% |
Debt issued as a percent of face value (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 99.26% | 98.50% |
Secured Notes Indenture, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, cash tender offer |  |  |  |  |  |  |  |  | $ 215,000,000 |  | $ 19,300,000 |  |  |  |
Tendered and validly accepted and fully discharged amount |  |  |  |  |  |  |  |  |  | $ 13,600,000 |  |  |  |  |
Asset sale offer expired |  |  |  |  |  |  |  | $ 6,900,000 |  |  |  |  |  |  |
Secured Notes Indenture, 2026 | Summit Holdings And Finance Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price (as a percent) |  | 102.125% |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  | $ 649,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, notice of redemption on tender offer |  | 114,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument redemption irrevocable deposit |  | $ 121,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
2026 Unsecured Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt offering |  |  |  |  |  |  |  |  |  |  |  | $ 209,500,000 |  |  |
Debt instrument, repurchase amount |  |  |  |  |  |  |  |  |  |  |  | 29,500,000 |  |  |
2026 Unsecured Notes | Summit Holdings And Finance Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument redemption notice amount |  |  |  |  |  |  | $ 209,500,000 |  |  |  |  |  |  |  |
2025 Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt offering |  |  |  |  |  |  |  |  |  |  |  | 180,000,000 |  |  |
Debt instrument, repurchased face amount |  |  |  |  |  |  |  |  |  |  |  | $ 29,700,000 |  |  |
2025 Senior Notes | Summit Holdings And Finance Corporation | Beginning October 15, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price (as a percent) |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
2025 Senior Notes | Summit Holdings And Finance Corporation | Beginning October 15, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price (as a percent) |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Secured Notes Indenture, 2025 | Summit Holdings And Finance Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, cash tender offer |  |  | $ 49,800,000 |  |  |  |  |  |  |  |  |  |  |  |

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